This study evaluates the impact of the 65-mph speed limit on traffic safety. Using data for the years 1981 to 1995 for all 50 states, a pooled time series analysis is conducted. Separate models are estimated for state fatality rates on four categories of roads: rural interstate highways, rural noninterstate roads, all roads except for rural interstate highways, and all roads. It is reported tha...

The paper presents an analysis of roadway factors and posted speed limits that affect the operating speed at multi-lane highways in Egypt. Field data on multi-lane highways in Egypt are used in this investigation. The analysis considers two categories of highways. The first consists of two desert roads (Cairo-Alexandria and Cairo-Ismailia desert roads) and the second consists of two agricultura...

There are over 60,000 miles (100,000 km) of coastal highways in the United States (US) that occasionally exposed to waves and water levels. Wise stewardship calls for integration engineering principles practices planning design these roads bridges make them more resilient. A new, 3rd, edition primary guidance document Hydraulic Engineering Circular No. 25 (HEC-25), entitled “Highways Coastal En...

this article is investigating the town and country planning in austria. although according to new definitions spatial planning in austria has been started during fifties and sixties of the twentieth century, the issue has been set seriously on the l?nder's agenda of planning as the main authorities since establishing austrian conference on regional planning (?rok) in 1971.the programs impl...

There are about 3,000,000 miles and 50,000 miles of paved roads and highways in the US, respectively. Many of these roads and highways have approached the end of their design life and are considered to be in poor conditions. To upgrade these valuable infrastructure assets in a sustainable manner, state and federal governments have suggested the use of the rubberized asphalt technology. The use ...

Membrane trafficking, or the flow of membrane material between endomembrane compartments and the plasmalemma, is essential for transport of proteins and other macromolecules to various destinations inside and outside of the cell. Membrane trafficking also underlies the fundamental need for cells to maintain cellular homeostasis, as well as to meet specific demands during signal perception and t...

Membrane trafficking, or the flow of membrane material between endomembrane compartments and the plasmalemma, is essential for transport of proteins and other macromolecules to various destinations inside and outside of the cell. Membrane trafficking also underlies the fundamental need for cells to maintain cellular homeostasis, as well as to meet specific demands during signal perception and t...

Membrane trafficking, or the flow of membrane material between endomembrane compartments and the plasmalemma, is essential for transport of proteins and other macromolecules to various destinations inside and outside of the cell. Membrane trafficking also underlies the fundamental need for cells to maintain cellular homeostasis, as well as to meet specific demands during signal perception and t...

Automatic and semi-automatic methods for the extraction of topographic information are a present research topic. Especially for topographic mapping and navigation applications road extraction is important, but still not in practice. Due to the speckle effect and the limited width of roads with respect to the ground resolution automatic road extraction from SAR imagery is rather difficult. In th...